SV-10 SV-100 - A&D Company · 2018-09-06 · 11 3-3-2 SV-100 Use the MODE key to switch between Pa⋅s (Pascal second) and P (Poise). The unit selected at the factory before shipment

SV-10 SV-100

Vibro Viscometer

INSTRUCTION MANUAL

1WMPD4000646E

© 2008 A&D Company Ltd. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, or translated into any language in any form by any means without the written permission of A&D Company Ltd. The contents of this manual and the specifications of the instrument covered by this manual are subject to change for improvement without notice.

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CONTENTS

1. INTRODUCTION .............................................................................................................................3 1-1 Compliance......................................................................................................................................... 3 1-2 Features ............................................................................................................................................. 5

2. UNPACKING THE VISCOMETER ..................................................................................................6 2-1 Unpacking........................................................................................................................................... 6 2-2 Installing the Viscometer .................................................................................................................... 7

3. DISPLAY AND KEYS ......................................................................................................................8 3-1 Display................................................................................................................................................ 8 3-2 Keys.................................................................................................................................................... 9 3-3 Displaying the Viscosity Values ........................................................................................................ 10

3-3-1 SV-10......................................................................................................................................... 10 3-3-2 SV-100........................................................................................................................................11

4. PRECAUTIONS ............................................................................................................................12 4-1 General Precautions......................................................................................................................... 12 4-2 During Use........................................................................................................................................ 13 4-3 After Use........................................................................................................................................... 14 4-4 Measuring the Absolute Value of Viscosity....................................................................................... 15

4-4-1 At Measurement ........................................................................................................................ 15 4-4-2 At Calibration ............................................................................................................................. 16

5. MEASUREMENT ..........................................................................................................................17 5-1 Preparing the Sample....................................................................................................................... 17 5-2 Basic Measurement Procedure ........................................................................................................ 19 5-3 Changing Units ................................................................................................................................. 20

6. VISCOSITY CALIBRATION ..........................................................................................................21 6-1 Notes on Viscosity Calibration.......................................................................................................... 21 6-2 Calibration Procedure....................................................................................................................... 22

6-2-1 One-point Calibration................................................................................................................. 23 6-2-2 Two-point Calibration................................................................................................................. 24 6-2-3 Simplified Calibration Using Purified Water (SV-10 only).......................................................... 26

7. FUNCTION SETTING....................................................................................................................28 7-1 Operation.......................................................................................................................................... 28 7-2 Details of the Function Items............................................................................................................ 30 7-3 Description of Items.......................................................................................................................... 31 7-4 Data Output Format Examples......................................................................................................... 40

7-4-1 A&D Standard Format................................................................................................................ 40 7-4-2 D.P. Format................................................................................................................................ 42 7-4-3 CSV Format............................................................................................................................... 43 7-4-4 RsVisco Format ......................................................................................................................... 47

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8. CONNECTION TO A PERSONAL COMPUTER...........................................................................49

9. CONNECTION TO A PRINTER ....................................................................................................48

10. RS-232C SERIAL INTERFACE ..................................................................................................51

11. COMMAND LIST.........................................................................................................................52

12. TROUBLESHOOTING................................................................................................................53

13. ERROR DISPLAY .......................................................................................................................57

14. SPECIFICATIONS.......................................................................................................................58

15. OPTIONAL ACCESSORIES .......................................................................................................60

16. EXTERNAL DIMENSIONS .........................................................................................................64 Whole View ......................................................................................................................................... 64 Detailed View of the Sensor Unit ........................................................................................................ 64

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1. INTRODUCTION This manual describes how the SV series viscometer works and how to get the most out of it in terms of performance.

Read this manual thoroughly before using the viscometer and keep it at hand for future reference.

1-1 Compliance Compliance with FCC Rules

Please note that this device generates, uses and can radiate radio frequency energy. This device has been tested and has been found to comply with the limits of a Class A computing device pursuant to Subpart J of Part 15 of FCC rules. These rules are designed to provide reasonable protection against interference when this device is operated in a commercial environment. If this unit is operated in a residential area, it may cause some interference and under these circumstances the user would be required to take, at his own expense, whatever measures are necessary to eliminate the interference.

(FCC = Federal Communications Commission in the U.S.A.)

Compliance with Council Directives

This device features radio interference suppression and safety regulation in compliance with the following Council Directives

Council directive 89/336/EEC EN61326 EMC directive Council directive 73/23/EEC EN60950 Safety of Information Technology Equipment

EN61326 Emission and Immunity.

Note

The CE mark is an official mandatory European marking. Please note that any electronic product must comply with local laws and regulations when sold or used anywhere outside Europe.

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1-2 Features High accuracy

The Sine-wave Vibro Viscometer achieves a high measurement accuracy of 1%*1

(repeatability) over the full range. *1 Refer to "14. SPECIFICATIONS" on page 58.

Wide range continuous measurement Continuous measurement over the whole measuring range is possible, without replacing the viscosity detection sensor plates.

Standard temperature sensor The temperature sensor to measure the sample temperature is installed as standard. The temperature sensor is located between the two sensor plates. So, the accurate detection of the relation between temperature and viscosity is possible.

Accurate measurement Due to the low heat capacity of the viscosity detection unit (sensor plates and temperature sensor), the time required for temperature equilibrium is short. Thus, the sample viscosity can be measured accurately in a short time.

Long continuous measurement time The sensor plates, with a low frequency of 30 Hz and an amplitude of less than 1 mm, apply very little load to the sample. So, the viscometer can continuously obtain stable viscosity values without causing a temperature rise or damaging the sample.

Measurement of a non-Newtonian fluid/foaming sample The thin sensor plates allow little deformation of the sample texture. Thus, non-Newtonian fluid can be measured in a stable way. And, foaming samples can be measured without breaking minute foam particles and with less influence scattering large foam particles. When measuring tap water, bubbles may accumulate on the sensor plates, increasing the viscosity.

Measurement of a flowing sample The two sensor plates oscillate in the opposite direction. So, even when a sample is in motion, errors are eliminated. This allows measurement of a sample while being stirred. The viscometer can be used for a flowing product line, which enables field management with identical data used at the laboratories.

Calibration The viscometer can be calibrated using a standard viscosity fluid or a sample of a known viscosity. Calibration allows the viscometer to maintain the accuracy constantly. By calibrating an actual sample, using the viscosity value obtained by another type of viscometer as a correction value, the measurement data obtained by the SV series viscometer can be combined into those obtained by the other type of viscometer.

Simplified calibration when measuring the viscosity near 1 mPa⋅s, (SV-10 only) Simplified calibration using purified water is a one-key operation. The SV-10 has a built-in function to measure the temperature of the purified water using the temperature sensor and calculates the viscosity value of the purified water at that temperature. At this time, be careful not to influence the viscosity value by generating bubbles.

Standard windows communication tools WinCT-Viscosity Windows communication tools WinCT-Viscosity (CD-ROM) is provided as standard. The CD-ROM contains the graphing program RsVisco, which imports the data to a personal computer and displays the results as a graph in real time. With RsVisco, changes in viscosity over time and temperature dependency of viscosity can be observed easily and the obtained data can be saved in files.

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2. UNPACKING THE VISCOMETER

2-1 Unpacking The viscometer is a precision instrument. Unpack the viscometer carefully. Keep the packing

material to be used for transporting the viscometer in the future.

Accessories

Note Please confirm that the AC adapter type is correct for your local voltage and receptacle type.

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2-2 Installing the Viscometer Install the viscometer as follows:

1 Connect the display unit to the main unit using the connection cable.

2 Insert the AC adapter plug into the AC adapter jack located on the rear side of the display unit. Insert the other end of the AC adapter plug into an electrical outlet.

Note: • Confirm that the adapter type is correct for

the local voltage and power receptacle type.

• The main unit and the display unit have been adjusted in pairs. For accurate viscosity measurement, before use, confirm that the main unit and the display unit have the same serial number.

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3. DISPLAY AND KEYS

3-1 Display

Name Description

Standby mode Displays [- - - - -].

Measurement mode Displays the viscosity value in real time. Viscosity display

Data hold mode Freezes the display of the viscosity value.

Viscosity units Displays the unit of viscosity. Standby mode Measurement mode

Displays the temperature value in real time. Temperature display

Data hold mode Freezes the display of the temperature value.

Temperature units Displays the unit of temperature.

Processing indicator Blinks while the measurement is being performed. (While the sensor plates are in vibrating motion)

Hold indicator Illuminates while the viscometer is in the data hold mode.

RsVisco link indicator Illuminates while measurement is performed using RsVisco, the graphing program contained in the WinCT-Viscosity (CD-ROM).

Calibration indicator Displays " C " in the calibration mode. At one-point calibration Blank display [ ]

Inputting first point Displays [ - - ]. Calibration mode ID

indicator At two-point calibration Inputting second point Displays [ - - ].

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3-2 Keys

Key Description

ON:OFF Power

Turns the power on and off. When the power is turned on, the viscometer enters the standby mode ( [- - - - -] is displayed.)

START Start

measurement

Start a measurement. (The processing indicator blinks.) Displays the viscosity and temperature values in real time during measurement.

STOP Stop

measurement

Stops the measurement (The processing indicator is off) and freezes the display of the viscosity and temperature values at the time the STOP key is pressed during measurement. When the STOP key is pressed again, the viscometer enters the standby mode.

HOLD Data hold

Freezes temporarily the display of the measurement data (viscosity and temperature) at the time the HOLD key is pressed during measurement. (The hold indicator is on.) In the above condition, the measurement is continued. (The processing indicator blinks.) Pressing the HOLD key again releases the data hold mode. ∗1

MODE Change units

Changes viscosity units. ∗1 (By the function setting "fnc 1", the measurement elapsed time can be displayed.)

PRINT Output data Outputs the measurement data.

∗1 While the measurement is being performed using the graphing program RsVisco, the

data hold mode using the HOLD key and unit changes using the MODE key are not

available. RsVisco is contained in the accessory Windows communication tools,

WinCT-Viscosity.

While data are being output continuously (function setting "prt 2" or SIR command), the

data hold mode using the HOLD key is not available.

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3-3 Displaying the Viscosity Values The viscosity values are displayed as below, depending on the unit selected and the viscosity range.

The correlation of the units are as follows: 1 mPa⋅s = 0.001 Pa⋅s = 1 cP =0.01 P

3-3-1 SV-10 Use the MODE key to switch between mPa⋅s (Millipascal second) and Pa⋅s (Pascal second), or between cP (Centipoise) and P (Poise).

The unit selected at the factory before shipment is mPa⋅s.

When the viscosity unit is mPa⋅s or Pa⋅s:

Unit selected Viscosity measured mPa⋅s Pa⋅s

mPa⋅s Display Minimum display Unit Remarks Display Minimum

display Unit Remarks 0.30 0.0003 ⏐ ｜

1 1.00 0.0010 ｜｜ 9.99

0.01

0.0099

0.0001

Digit indicating 0.01 mPa⋅s is not displayed

10 10.0 0.0100 ｜｜

99.9 0.1

0.0999 0.0001

100 100 0.100 ｜｜ 999

1

mPa⋅s

0.999 0.001

1000 1.00 1.00 ｜｜

10000 10.00 0.01 Pa⋅s

Switches to Pa⋅s 10.00

0.01

Pa⋅s

When the viscosity unit is cP or P:

Unit selected Viscosity measured cP P

mPa⋅s Display Minimum display Unit Remarks Display Minimum

display Unit Remarks 0.30 0.0030 ｜｜

1 1.00 0.0100 ｜｜ 9.99

0.01

0.0999

0.0001

10 10.0 0.100 ｜｜ 99.9

0.1 0.999

0.001

100 100 1.00 ｜｜ 999

1

cP

9.99 0.01

1000 1 0.0 10.0 ｜｜

10000 100.0 0.1 P Switches

to P 100.0 0.1

P

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3-3-2 SV-100 Use the MODE key to switch between Pa⋅s (Pascal second) and P (Poise).

The unit selected at the factory before shipment is Pa⋅s.

Unit selected Viscosity

measured Pa⋅s P

Pa⋅s Display Minimum display Display Minimum

display 1 1.00 10.0 ｜｜ 9.99

0.01 99.9

0.1

10 10.0 100 ｜｜ 99.9 999

100 100.0

0.1

1000

1

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4. PRECAUTIONS To get the optimum performance from the viscometer and acquire accurate measurement data, note the following:

4-1 General Precautions Install the viscometer in an environment where the temperature and humidity are not excessive.

The best operating temperature is 25°C±2°C at 45-60% relative humidity.

For precise measurement, install the viscometer where there are no great changes in

temperature and humidity.

Install the viscometer where it is not exposed to direct sunlight and it is not affected by heaters

or air conditioners.

Install the viscometer where it is free of dust.

Install the viscometer away from equipment which produces magnetic fields.

The viscometer uses the Tuning-fork Vibration Method. So, use much care to avoid external

vibration, especially when measuring low viscosity.

Places where the viscometer is prone to vibration are:

Second or higher floor, soft ground, near busy highways or rail lines.

Avoid these places as a measuring site. If measurement is to be performed in such a place, use

an anti-vibration table that is available as an option (AD-1685).

Protect the internal parts from liquid spills and excessive dust.

Do not disassemble the viscometer.

When precise measurement is required, acclimatize the viscometer to the measuring

environment. After installation, plug in the AC adapter and warm up the viscometer for one hour

or more.

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4-2 During Use To level the surface of the sample; adjust the leveling feet so that the center of the narrow part

of the right and left sensor plates is on the liquid surface.

The viscosity of a liquid is temperature dependent and changes by negative 2 to negative 10

percent, per degree Celsius. Take changes in the liquid temperature into consideration for an

accurate measurement.

Be sure to calibrate using the standard viscosity fluid or purified water before measurement.

In a measurement that takes a long time, perform calibration periodically, as necessary.

Placing the sensor plates and the temperature sensor in the sample may change the sample

temperature. For precise measurement, leave the sample as is for a while, after placing the

sensor plates and the temperature sensor, to ensure no changes to the sample temperature.

And then, start a measurement.

Ensure a stable power source when using the AC adapter.

Use only your finger to press the keys. Using a sharp instrument such as a pen may damage

keys.

The sample cup is made of polycarbonate (PC) and is not appropriate for organic solvents.

When organic solvents are used as a sample fluid, do not use the accessory sample cup. Use

the glass sample cup (AX-SV-35) that is sold separately or a commercially-available glass

beaker.

The protector can be raised or removed. So, even when a beaker is used, the viscosity can be

measured with a small amount of sample.

How to remove the protector:

Press the left and right side frames lightly in the

direction indicated as 1 to remove the rotational axis.

Pull the protector in the direction indicated as 2 to

remove.

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4-3 After Use Remove any residual sample material from the sensor plates, temperature sensor and

protector using alcohol. Using the sensor plates, temperature sensor and protector with

residue of an old sample left on will cause a measurement error.

Clean the sensor plates carefully to avoid bending them.

The sensor plates and the temperature sensor are made of stainless steel (SUS304). The

surface is plated with 24K gold.

Note

Liquids with strong acidity may remove the gold plating and corrode the sensor plates and the temperature sensor.

How to clean the sensor plates and temperature sensor

Hold the sensor plate or temperature sensor with

tissue paper. Move the tissue paper downward to

remove the sample.

Then, use tissue paper moistened with alcohol,

to remove any residual sample material.

Clean the sample cup as necessary.

Unlock the cable connector before disconnecting the connection cable.

How to unlock the cable connector

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4-4 Measuring the Absolute Value of Viscosity The SV Series Sine-wave Vibro Viscometer, as a measuring principle, detects the product of viscosity and density.

Displayed viscosity value = Viscosity × Density ⋅ ⋅ ⋅ ⋅ ⋅ [1]

While the displayed value has a unit of mPa⋅s, it indicates the product of viscosity and density.

Example (1) When a sample has an absolute value of viscosity of 2.00 mPa⋅s and density of 1.000: Displayed value = 2.00 [mPa⋅s] × 1.000

= 2.00 [mPa⋅s]

(2) When a sample has an absolute value of viscosity of 2.00 mPa⋅s and density of 0.800: Displayed value = 2.00 [mPa⋅s] × 0.800

= 1.60 [mPa⋅s]

Note

The density can be measured, using the density determination kit, AD-1653 in combination with a balance.

To obtain the absolute viscosity value precisely, do as follows:

4-4-1 At Measurement Divide the displayed viscosity value by the sample density to obtain the absolute value of viscosity.

Example (1) Measure the sample and confirm the displayed viscosity value.

Here, 736 mPa⋅s as an example.

(2) Check the sample density at the temperature when the sample is measured.

Here, 0.856 as an example.

(3) Divide the displayed viscosity value by the sample density to obtain the absolute value of viscosity.

Here, 860 mPa⋅s is obtained as the absolute viscosity value.

Absolute value of viscosity =

= ≅ 860 mPa⋅s

Displayed viscosity value

Sample density

736

0.856

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4-4-2 At Calibration When calibrating, enter the product of the absolute viscosity value and the density of the standard viscosity fluid used for calibration, as a correction value. The standard viscosity fluid has the calculation sheet of kinetic viscosity and viscosity at various temperatures attached. To obtain the correction value using this sheet, do as follows: Kinetic viscosity = From this, Density = ⋅ ⋅ ⋅ ⋅ ⋅ [2] Correction value = Viscosity × Density ⋅ ⋅ ⋅ ⋅ ⋅ [3] When substituting [2] for the density in [3], the following equation is obtained. Correction value = ⋅ ⋅ ⋅ ⋅ ⋅ [4] Example 1: To calibrate the viscometer using a standard viscosity fluid:

Using the calculation sheet, calculate the value used for calibration.

(1) Check the kinetic viscosity and the viscosity at the temperature when the calibration is performed.

Here, 1011 mm2/s for the kinetic viscosity and 889 mPa⋅s for the viscosity at 20°C as an example.

(2) Substitute the values above into equation [4]. ≅781

781 mPa⋅s is obtained as a correction value used for calibration.

(3) After calibration, measure the viscosity of the standard viscosity fluid used and confirm that the viscometer displays the similar value as the correction value, 781 mPa⋅s in this example. This completes the calibration procedure.

Example 2: To calibrate using a standard viscosity fluid with known values of viscosity and density.

In this example, a standard viscosity fluid with a viscosity of 889 mPa⋅s at 20°C is used.

(1) Check the viscosity value and the density of the standard viscosity fluid at the temperature when the calibration is performed..

Here, 889 mPa⋅s for the viscosity and 0.878 for the density at 20°C as an example.

(2) Substitute the values above into equation [3].

889 × 0.878 ≅ 781


(3) After calibration, measure the viscosity of the standard viscosity fluid used and confirm that the viscometer displays the similar value as the correction value, 781 mPa⋅s in this example. This completes the calibration procedure.

Viscosity

Density

Viscosity

Kinetic viscosity

Viscosity2

Kinetic viscosity

8892

1011

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5. MEASUREMENT

5-1 Preparing the Sample 1 Pour the sample into the cup until its surface

reaches between the level gauges. The level gauges indicate 35 and 45 mL.

2 Attach the cup on the table along the guides.

3 Confirm that the protector is in the position as shown in the figure.

Raise the lever to release the sensor unit.

4 Pinch the grips, support the front side of the sensor unit and gently lower the sensor plates above the sample surface.

5 Lower the lever to secure the sensor unit.

6 Turn the knob on the table so as to adjust the sample surface to the center of the narrow part of the sensor plates. At this time, use the surface locator plate as a guide. The surface locator plate has been secured in position so that the tip of the surface locator plate comes into contact with the sample surface.

Note • Be sure to adjust the sample surface to the

center of the narrow part of the sensor plates. Otherwise, a measurement error may occur.

• The surface locator plate can be attached or removed by loosening the screw.

• Before removing the sensor protective cover, remove the surface locator plate.

• When the surface locator plate was removed and attached again, it is recommended that calibration be performed using the standard viscosity fluid before measurement.

SV-10

SV-100

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NO

Note Use the protector in the position as shown on the left below. If the protector is not used with the SV-10, a measurement error may occur, especially in measuring a viscosity over 5000 mPa⋅s.

When the position of the sensor plates in the liquid is not at the same level, level the viscometer using the leveling feet so that the liquid surface will be leveled.

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5-2 Basic Measurement Procedure

1 With the power turned off, press the ON:OFF

key.

When the display is in the standby mode, press the START key. *1

After about 15 seconds, the measurement values are displayed.

2 During measurement, press the HOLD key as necessary, to freeze the display temporarily.

To release the data hold mode, press the HOLD key again. *2

3 Press the STOP key to stop the measurement. The measurement results freeze and are displayed.

4 To stop the measurement, press the STOP key.

To go on to the next measurement, set the sample and press the START key.

When the viscosity value is below the measuring range, Sl TOP is displayed.

When the viscosity value exceeds the measuring range, SH TOP is displayed.

If the sensor plates are not in vibrating motion for about 20 seconds, for example, when the sample coagulates, the measurement will stop automatically.

∗1 When the graphing program RsVisco is used, press the START button on the RsVisco to

start a measurement.

∗2 While the measurement is being performed using the graphing program RsVisco or data

are being output continuously (function setting "prt 2" or SIR command), the data hold

mode using the HOLD key is not available.

The below is an example of the SV-10 at shipment. For the SV-100, the unit at shipment is Pa⋅s

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5-3 Changing Units The units of viscosity available are: mPa⋅s (millipascal second),

Pa⋅s (Pascal second),

cP (Centipoise),

P (Poise). The correlation of the units are as follows: 1 mPa⋅s = 0.001 Pa⋅s = 1 cP =0.01 P The units of temperature available are: °C (Celsius) and °F (Fahrenheit). The unit selected upon power-on depends on the function setting. The unit selected at the factory before shipment is as shown below.

Model Viscosity Temperature SV-10 mPa･s SV-100 Pa･s

°C

Use the MODE key to change units. Each time the MODE key is pressed, units are switched as below: Note that the unit of temperature is fixed in the function setting.

SV-10 In the function setting, mPa⋅s or Pa⋅s is selected:

In the function setting, cP or P is selected:

SV-100

Note While the measurement is being performed using the graphing program RsVisco, unit changes using the MODE key is not available.

With the function setting "fnc 1", pressing the MODE key during measurement will display the measurement elapsed time.

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6. VISCOSITY CALIBRATION Viscosity calibration is to correct the viscosity value. Two calibration methods are available: one-point calibration and two-point calibration, using

standard viscosity fluids. With the SV-10, simplified calibration using purified water is available. It is recommended that calibration be performed using a fluid with a known viscosity value

which is close to the sample viscosity. When the measuring range is great, perform two-point calibration. Two-point calibration requires two standard viscosity fluids (high viscosity and low viscosity) that are appropriate for the measuring range.

With the SV-10, when measuring the viscosity near 1 mPa⋅s, simplified calibration using purified water, which is a one-key operation, is available. The SV-10 has a built-in function to perform an automatic temperature compensation on the viscosity value, based on the temperature of the purified water used. In one-point and two-point calibration, the viscosity of a fluid with a known value, such as a

standard viscosity fluid, is measured, displayed, corrected digitally and saved in memory. To obtain the absolute viscosity value precisely, use the correction value as described in

"4-4-2 At Calibration". If the wrong calibration data such as a correction value have been entered, the viscometer

condition can be restored. For details, refer to "Initialization (Clr)" of the function setting.

6-1 Notes on Viscosity Calibration Pay close attention to the liquid temperature at calibration. Be sure to enter the viscosity

value of the liquid temperature at calibration. Even a standard viscosity fluid has a viscosity change of -2%/°C to -10%/°C, and purified water, a viscosity change of -2%/°C, when the room temperature changes. The temperature of the standard viscosity fluid must be the same as the temperature of the

sensor plates and the temperature sensor. Allow the displayed temperature to stabilize before calibration. Be sure to adjust the sample surface to the center of the narrow part of the sensor plates.

Otherwise, a measurement error may occur. In the calibration mode, the unit of viscosity for the SV-10 is mPa⋅s, for the SV-100, Pa⋅s.

The unit of temperature is fixed to °C. The viscometer has been calibrated with the protector attached when shipped. Please note

that the value, obtained when the viscometer is calibrated without the protector, may be different from that upon shipment. If water other than purified water (such as tap water) is used for simplified calibration, or the

water temperature is different from the ambient temperature, bubbles may accumulate on the sensor plates and cause a measurement error. Allow the sample to adjust to the ambient temperature and remove any accumulated bubbles before calibration. If the measured viscosity of the water is 3.00 mPa⋅s or greater, it is contaminated and

simplified calibration can not be performed using it. Replace the water.

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6-2 Calibration Procedure

Note

As to the correction value used for one-point calibration and two-point calibration, enter the product of the absolute viscosity value and the density of the standard viscosity fluid. For details, refer to "4-4-2 At Calibration". After calibration, check the values, comparing the product described above with the displayed value. Kinetic viscosity = From this, Viscosity × Density = Example 1: To calibrate the viscometer using a standard viscosity fluid:

Using the calculation sheet, calculate the value used for calibration.

(1) Check the kinetic viscosity and the viscosity at the temperature when the calibration is performed.

Here, 1011 mm2/s for the kinetic viscosity and 889 mPa⋅s for the viscosity at 20°C as an example.

(2) Substitute the values above to obtain the value for . ≅781


Example 2: To calibrate using a standard viscosity fluid with known values of viscosity and density. In this example, a standard viscosity fluid with a viscosity of 889 mPa⋅s at 20°C is used.

(1) Check the viscosity value and the density of the standard viscosity fluid at the temperature when the calibration is performed..

Here, 889 mPa⋅s for the viscosity and 0.878 for the density at 20°C as an example.

(2) Substitute the values above to obtain the value for Viscosity × Density.

889 × 0.878 ≅ 781


8892

1011

Viscosity

Density

Viscosity2

Kinetic viscosity is obtained.

Viscosity2

Kinetic viscosity

23

6-2-1 One-point Calibration

1 In the standby mode, press and hold the HOLD key to enter the calibration mode. " Cal " appears.

2 Select one-point calibration (Cal-1) and press the PRINT key to confirm. The standby mode of the one- calibration mode appears. Use the MODE key to switch between the calibration modes, one-point calibration (Cal-1) or two-point calibration (Cal-2). Press the STOP key to exit the calibration mode. The display returns to the standby mode.

3 Place the standard viscosity fluid in the sample cup. Press the START key to start a measurement.

4 After the measurement, wait for the display to become stable and press the PRINT key. The measurement value blinks and is ready to be corrected.

5 Correct the value using the following keys: MODE key Switches the blinking digits.

START key Changes the setting of a blinking digit.

STOP key Moves the decimal point.

6 Press the PRINT key to confirm the correction value.

7 To exit the calibration mode: With " end " being displayed, press the PRINT key again to return to the standby mode.

To correct the value: With " end " being displayed, press the STOP key and correct the value.

8 Measure the viscosity of the standard viscosity fluid used. Confirm that the viscometer displays the similar value as the entered correction value.

The below is an example of the SV-10. For the SV-100, the unit is Pa⋅s

(Standby mode)

(One-point calibration)

Press and hold

(One-point calibrationstandby mode)

(Measurement mode)When the datais stabilized

(Correct the value)

(End of one-point calibration)

(Standby mode)

To correct

Set standard viscosity fluid

(Confirm the value)

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6-2-2 Two-point Calibration

1 In the standby mode, press and hold

the HOLD key to enter the calibration mode. " Cal " appears.

2 Select two-point calibration (Cal-2) and press the PRINT key to confirm. The standby mode of the two- calibration mode appears. Use the MODE key to switch between the calibration modes, one-point calibration (Cal-1) or two-point calibration (Cal-2). Press the STOP key to exit the calibration mode. The display returns to the standby mode.

3 In two-point calibration mode, the calibration

mode ID indicator (-) appears below the temperature display.

4 Place the standard viscosity fluid in the sample cup. Press the START key to start the measurement of the first point.

5 After the measurement, wait for the display to become stable and press the PRINT key. The measurement value blinks and is ready to be corrected.

6 Correct the value using the following keys:

MODE key Switches the blinking digits.




8 To correct the value:

In the calibration standby mode to enter the second point, press the STOP key and correct the value.

The below is an example of the SV-10. For the SV-100, the unit is Pa⋅s

25

9 When the measurement of the first point has completed, clean the sensor plates, temperature sensor and protector and prepare the second standard viscosity fluid.

10 Place the second standard viscosity fluid in the sample cup. Press the START key to start the measurement of the second point.

11 After the measurement, wait for the display

to become stable and press the PRINT key. The measurement value blinks and is ready to be corrected.

12 Correct the value using the following keys:





14 To exit the calibration mode: With " end " being displayed, press the PRINT key again. The calibration data is saved and the display returns to the standby mode.

To correct the value: With " end " being displayed, press the STOP key and correct the value.

15 Measure the viscosity of the two standard viscosity fluids used. Confirm that the viscometer displays the similar value as the entered correction value for each fluid.

From the previous page

Set standard viscosity fluid

(Second point measurement mode)When the datais stabilized

(Correct the second point value)

(End of two-point calibration)To correct

(Standby mode)

(Confirm the valueof the first fluid)

(Confirm the valueof the second fluid)

26

6-2-3 Simplified Calibration Using Purified Water (SV-10 only)

1 Place the purified water in the sample cup.

2 Press the START key to measure the purified water. Confirm that the viscosity and temperature values are stabilized.

3 Press and hold the START key.

The theoretical viscosity value(Viscosity × Density) of the purified water at the measuring temperature is displayed and all the displays blink. To cancel the operation, press the STOP key. The display returns to the status before calibration.

4 Press the START key again to

perform calibration. When calibration is completed, " end " is displayed. Then, the viscosity returns to the measurement mode.

27

Reference data: Theoretical viscosity value (Viscosity × Density)

of the purified water at various temperatures Temperature (°C) Viscosity × Density (mPa･s)

10.0 1.31 11.0 1.27 12.0 1.24 13.0 1.20 14.0 1.17 15.0 1.14 16.0 1.11 17.0 1.08 18.0 1.05 19.0 1.03 20.0 1.00 21.0 0.98 22.0 0.95 23.0 0.93 24.0 0.91 25.0 0.89 26.0 0.87 27.0 0.85 28.0 0.83 29.0 0.81 30.0 0.79

28

7. FUNCTION SETTING The viscometer, by selecting functions to be used in the function setting, can specify the performance appropriate to the usage.

Each function is assigned parameters. The performance of a function is specified by changing the parameter.

The parameters saved, even if the power is turned off, are maintained in non-volatile memory.

7-1 Operation The operational procedure of the function setting is as follows:

1 In the standby mode, press and hold the MODE key to enter the function setting mode.

2 Press the MODE key to select a function item.

3 Press the PRINT key to confirm the function item. The changeable digit blinks.

4 Press the START key or HOLD key to change the blinking digit.

START key Increases the value of the blinking digit. When the value reaches the upper limit of the setting range, the minimum value appears again.

HOLD key Decreases the value of the blinking digit. When the value reaches the lower limit of the setting range, the maximum value appears again.

5 To save the new setting, press the PRINT key. After " end ", the next item is displayed.

To cancel the new setting, press the STOP key. The next item is displayed.

6 To change other settings, repeat the procedure starting at step 2.

7 To exit the function setting mode, press the STOP key. The viscometer returns to the standby mode.

Note The operational procedures for setting the date and time ("Cladj"), ID number ("id") and initialization ("Clr") are not the same as the procedure described above. Refer to "7-3 Description of Items".

"Date/Time" pages 31-33

"Device ID Number" pages 37-38

29

Example of the function setting procedure Using the SV-10, to change the setting of "Unit upon power-on (Unit)" to the viscosity: cP

(Centipoise) and the temperature: °C (Celsius).

1 In the standby mode, press and hold the MODE

key to enter the function setting mode. " Cladj " appears.

2 Press the MODE key to select " Unit ".

3 Press the PRINT key to confirm the item.

(The decimal point illuminates when the setting currently saved is displayed.)

4 Press the START key or HOLD key to select the unit to be used.

(In this example, " 2 " is selected. Viscosity: cP, Temperature: °C)

5 Press the PRINT key to save the setting.

After " end ", the next item is displayed.

6 Press the STOP key to return to the standby mode.

30

7-2 Details of the Function Items

Function item Parameter Description Cladj Date/Time Sets the order of the date (YMD,MDY,DMY) and the

date/time. Cond 0 Follows the viscosity changes quickly. (Prone to vibration) Condition 1 • 2 Follows the viscosity changes slowly. (Stable values) Unit 0 • mPa⋅sUnit upon power-on 1 • Pa⋅s 2 cP 3 P

°C

4 mPa⋅s 5 Pa⋅s 6 cP 7

Viscos -ity

P

Temper-ature

°F

Factory setting: SV-10=0 SV-100=1

pnt 0 • Dot

Decimal point 1 Comma

With "Comma" selected, the separator for CSV format will be ";" (semicolon).

fnc 0 • Switches viscosity units. MODE key function during measurement 1 Switches between the temperature display and the

measurement elapsed time display. prt 0 • Key mode Press the PRINT key to output data.

Data output mode 1 Auto print mode Outputs automatically when the STOP key ends the measurement.

2 Stream mode Continuous output during measurement. Outputs the viscosity only when D.P. format is selected.

type 0 A&D standard format For AD-8121B MODES 1&2 Data output format 1 • D.P. format For AD-8121B MODE 3 2 CSV format For a personal computer 3 RsVisco format For graphing program RsVisco 5-at 0 No output Measurement elapsed time output 1 • Output

Available only for D.P. format

5-td 0 No output Date/time output 1 • Output

Available only for D.P. and CSV formats

5-ed 0 No output Other output 1 Outputs remarks.

2 • Outputs remarks, Device ID information and signature.

Available only for D.P. format

3 Outputs ID number. Available only for CSV format pU5e 0 No pause Pause at data output 1 • Pause (Approx. 2 seconds)

erfnc 0 • Usually use this parameter. Reserved ｜ 7 id Device ID number Set the device ID number. With "5-ed", the device ID information

is added to the measurement data. Clr Initialization

Restores the function settings and calibration data to the factory setting.

• Factory setting

31

7-3 Description of Items Date/Time (Cladj)

The upper two digits of the year are not displayed. For example, the year 2003 is displayed as "03".

The time is set using the 24-hour system.

Do not enter a non-existing date and time.

Set the order of the date, the date and time as follows: (Example: To change April 5, 2003, 11:22:33 to June 8, 2004, 12:34:00)

1 In the standby mode, press and hold the MODE key to enter the function setting mode. " Cladj " appears.

2 Press the PRINT key to display the current date.

When the date is not to be changed, press the MODE key to display the current time.

Changing the order of the date 3 Press the PRINT key. " y " (Year), " m " (Month)

and " d " (Day) blink.

4 Press the START key or HOLD key to change the order of displaying the date.

32

Changing the date

The date is changed in the selected displaying order.

The following is an example when the order of " y " (Year), " m " (Month) and " d " (Day) is selected.

5 Press the MODE key to select the setting value of " y " (Year). (Example:03)

6 Press the START key or HOLD key to change the year. (Example:03→04)

START key Increases the value of the blinking digit by one.

HOLD key Decreases the value of the blinking digit by one.

7 Press the MODE key to select the setting value of " m " (Month). (Example:04)

8 Press the START key or HOLD key to change the month. (Example:04→06)

9 Press the MODE key to select the setting value of " d " (Day). (Example:05)

10 Press the START key or HOLD key to change the day. (Example:05→08)

11 Press the PRINT key to save the date.

After " end ", the current time is displayed.

33

Changing the time 12 The current time is displayed. Press the MODE

key to display the current date.

13 Press the PRINT key to select the setting value of the hour. (Example:11)

14 Press the START key or HOLD key to change the hour. (Example:11→12)

15 Press the MODE key to select the setting value of the minute. (Example:22)

16 Press the START key or HOLD key to change the minute. (Example:22→34)

17 Press the MODE key to select the setting value of the second. (Example:33)

18 Press the START key or HOLD key to change the second. (Example:33→00)

19 Press the PRINT key to save the time.



34

Condition (Cond) The stability of the viscosity measurement results can be adjusted, taking ambient conditions such as vibration into consideration.

Parameter Settings Description

0 Follows the viscosity changes quickly. (Prone to vibration)

1 •

2 Follows the viscosity changes slowly. (Stable values)

When the viscosity value is unstable due to external vibration, set a greater parameter.

To measure while following the rapid changes in viscosity, set a smaller parameter.

With a smaller setting, the measurement is prone to external vibration. Consider the ambient conditions of the installation site.

Unit Upon Power-on (Unit) The units of viscosity and temperature displayed when the power is turned on are specified.

SV-10 Parameter Settings Description

0 • mPa⋅s (Millipascal second)

1 Pa⋅s (Pascal second)

2 cP (Centipoise)

3 P (Poise)

°C (Celsius)

4 mPa⋅s (Millipascal second)


6 cP (Centipoise)

7

Viscos- ity

P (Poise)

Temper-ature

°F (Fahrenheit)

In the standby mode, pressing the MODE key switches the viscosity unit. mPa⋅s ⇔ Pa⋅s, cP ⇔ P

With "fnc 0" selected, units can be switched even during measurement. *1

SV-100


1 • Pa⋅s (Pascal second)

3 P (Poise)

°C (Celsius)


7

Viscos- ity

P (Poise)

Temper-ature

°F (Fahrenheit)

In the standby mode, pressing the MODE key switches the viscosity unit. Pa⋅s ⇔ P

With "fnc 0" selected, units can be switched even during measurement. *1

*1 While the measurement is being performed using the graphing program RsVisco, unit changes using the MODE key is not available.

With the SV-10, for a viscosity over 1000 mPa⋅s, the unit is fixed to Pa⋅s, and for a viscosity over 1000 cP, the unit is fixed to P.

35

Decimal Point (pnt)

Parameter Settings Description 0 • Dot "."

1 Comma ","

The decimal point format for the displayed measurement data and the decimal point code for measurement data output via RS-232C are specified.

With "Comma" selected, the separator for CSV format and RsVisco format will be ";" (semicolon).

MODE Key Function During Measurement (fnc)


0 • Switches the viscosity units.

Each time the MODE key is pressed, the viscosity unit is switched.

SV-10: mPa⋅s ⇔ Pa⋅s, cP ⇔ P sv-100: Pa⋅s ⇔ P

Note With the SV-10, for the viscosity over 1000 mPa⋅s, the unit is fixed to Pa⋅s and for the viscosity over 1000 cP, the unit is fixed to P.

1

Switches between the temperature display and the measurement elapsed time display

Each time the MODE key is pressed, the display is switched between the temperature display and the measurement elapsed time display.

Upon a measurement start, the temperature display is selected.

When the elapsed time reaches 100 hours, the display returns to 0. (99.59.59→00.00.00)

Data Output Mode (prt) The condition to output the measurement data via RS-232C is set.


0 • Key mode During measurement or in the data hold mode, pressing the PRINT key outputs the current measurement values. *2

1 Auto print mode

The measurement values are output automatically when the STOP key ends the measurement.

Pressing the PRINT key outputs the current measurement values. *2

2 Stream mode

The measurement values are output continuously during measurement.

When D.P. format is selected in "Output format (type)" of the function setting, only the viscosity value is output, regardless of the settings of "5-at", "5-td" and "5-ed".

When this mode is selected, the data hold mode using the HOLD key is not available.

*2 When A&D standard format is selected in "Output format (type)" of the function setting, pressing the PRINT key in the standby mode will not output the measurement data.

36

Data Output Format (type) The output format appropriate for the device connected to RS-232C can be selected.

Parameter Settings Description 0 A&D standard format Used with the printer MODE 1 or MODE 2 when the optional compact

printer, AD-8121B is connected. Only the viscosity value is output.1 • D.P. format Used with the printer MODE 3 when the optional compact

printer, AD-8121B is connected.

With "prt 0" or "prt 1" selected for "Data output mode (prt)", output contents can be selected by the settings of "5-at", "5-td" and "5-ed".

With "prt 2" selected for "Data output mode (prt)", only the viscosity value is output.

2 CSV format Appropriate when a personal computer is used to collect data. Measurement values are output in comma separated format.

With "5-td" and "id" settings, the date/time and ID number can be added to the measurement data.

When a comma is selected as the decimal point by "pnt 1", a semicolon ";" is used as a data separator.

The viscosity value and the temperature are output using the internal resolution. *3

3 RsVisco format Used with the graphing program RsVisco. When a measurement is started using RsVisco, the viscometer automatically selects this format. The viscosity value and the temperature are output using the internal resolution.*3

*3 The relation between the measuring unit and the internal resolution is as follows: Viscosity Temperature

Model mPa･s Pa･s cP P °Ｃ °Ｆ

SV-10 0.01 0.0001 0.01 0.0001 Internal resolution SV-100 - 0.01 - 0.1

0.01 0.01

Measurement Elapsed Time Output (5-at)


0 No output

1 • Output

With D.P. format selected, whether or not to add the measurement elapsed time (the time elapsed from a measurement start) to the measurement data can be selected.

For examples of output format, refer to "7-4 Data Output Format Examples".

37

Date/time Output (5-td)


0 No output

1 • Output

With D.P. format or CSV format selected, whether or not to add the date and time to the measurement data can be selected.


Other Output (5-ed)

Parameter Settings Description 0 No output 1 Outputs remarks.

2 • Outputs remarks, Device ID information and signature.

With D.P. format selected, whether or not to add remarks, Device ID information or signature to the measurement data can be selected.


3 Outputs ID number.

With CSV format selected, whether or not to add ID number to the measurement data can be selected.


Pause at Data Output (pU5e)


0 No pause

1 • Pause (Approx. 2 seconds)

Whether or not to take a pause of two seconds each time one line is output can be selected, when the data are output via RS-232C.

When MODE 3 of the optional compact printer, AD-8121B is used, select "1".

Device ID Number (id) The ID number is used to identify the viscometer.

Whether or not to add the ID number to the measurement data can be selected by "5-ed" of the function setting.

The ID number is six characters long. The following characters are available for the ID number.

Character 0 1 2 3 4 5 6 7 8 9 (Space) -(hyphen) A B C D EDisplay 0 1 2 3 4 5 6 7 8 9 (Space) - a b C d e

Character F G H I J K L M N O P Q R S T U V W X Y ZDisplay f g H i j k l m N o p q r 5 t U v w x y z


38

Setting the ID number

1 In the standby mode, press and hold the MODE key to enter the function setting mode. " Cladj " appears.

2 Press the MODE key to select " id ".

3 Press the PRINT key to enter the ID number setting mode.

4 Set the ID number using the following keys:


START key Increases the value of the blinking digit by one.

HOLD key Decreases the value of the blinking digit by one.

STOP key Cancel the operation.

5 Press the PRINT key to save the setting.



39

Initialization (Clr) Restores the following data to the default setting.

Function setting

Calibration data

After initialization, check the viscosity value and perform calibration as necessary. (Refer to

6. VISCOSITY CALIBRATION").

1 In the standby mode, press and hold the

MODE key to enter the function setting mode. " Cladj " appears.

2 Press the MODE key to select " Clr ".

3 Press the PRINT key to display " Clr no ".

4 Press the START key to select " Clr go ".

5 Press the PRINT key to execute initialization.

After " end ", the next item is displayed. Initialization has completed.


40

7-4 Data Output Format Examples 7-4-1 A&D Standard Format Used with the printer MODE 1 or MODE 2 when the optional compact printer, AD-8121B is connected. Only the viscosity value is output.

SV-10 output format example

Viscosity unit Display Output format Remarks

LLLLL mPa･s OL,-99999999mPs Below measuring range error 0.30mPa･s ST,+00000.30mPs 10.0 mPa･s ST,+00010.00mPs The digit of 0.01mPa⋅s is always zero. 100 mPa･s ST,+00100.00mPs The digits of 0.01mPa⋅s and

0.1mPa⋅s are always zero. 1.00 Pa･s ST,+01000.00mPs For 1000mPa⋅s or greater, the

displayed unit is Pa⋅s, but the output unit remains mPa⋅s. The digits of 0.01mPa⋅s, 0.1mPa⋅s and 1mPa⋅s are always zero.

mPa･s

H Pa･s OL,+99999999mPs Above measuring range error L Pa･s OL,-99999999Pas Below measuring range error 0.0003 Pa･s ST,+000.0003Pas 0.0100 Pa･s ST,+000.0100Pas 0.100 Pa･s ST,+000.1000Pas The digit of 0.0001Pa⋅s is always

zero. 1.00 Pa･s ST,+001.0000Pas The digits of 0.0001Pa⋅s and

0.001Pa⋅s are always zero.

Pa･s

H Pa･s OL,+99999999Pas Above measuring range error L cP OL,-99999999 cP Below measuring range error 0.30 cP ST,+00000.30 cP 10.0 cP ST,+00010.00 cP The digit of 0.01cP is always zero. 100 cP ST,+00100.00 cP The digits of 0.01cP and 0.1cP are

always zero. 10.0 P ST,+01000.00 cP For 1000 cP or greater, the displayed

unit is P, but the output unit remains cP.The digits of 0.01cP, 0.1cP and 1cP are always zero.

cP

H P OL,+99999999 cP Above measuring range error L P OL,-99999999 P Below measuring range error 0.0030 P ST,+000.0030 P 0.100 P ST,+000.1000 P The digit of 0.0001P is always

zero. 1.00 P ST,+001.0000 P The digits of 0.0001P and 0.001P

are always zero. 10.0 P ST,+010.0000 P The digits of 0.0001P, 0.001P and

0.01P are always zero.

P

H P OL,+99999999 P Above measuring range error : Space (ASC 20h)

41


Viscosity unit Display Output format Remarks

L Pa･s OL,-99999999Pas Below measuring range error

1.00 Pa ･s

ST,+00001.00Pas

10.0 Pa･s ST,+00010.00Pas The digit of 0.01Pa⋅s is always zero.

Pa･s

H Pa･s OL,+99999999Pas Above measuring range error L P OL,-99999999 P Below measuring range error 10.0 P ST,+000010.0 P 100 P ST,+000100.0 P The digit of 0.1P is always zero.

P

H P OL,+99999999 P Above measuring range error : Space (ASC 20h)

42

7-4-2 D.P. Format Used with the printer MODE 3 when the optional compact printer, AD-8121B is connected.

With "prt 0" or "prt 1" selected for "Data output mode (prt)", output contents can be selected by the settings of "5-at", "5-td" and "5-ed".

With "prt 2" selected for "Data output mode (prt)", only the viscosity value is output

Shown below are SV-10 printing examples.

Printing format example (1)

Function setting (√=Output Blank=No output)

5-at 1 Measurement elapsed time √

5-td 1 Date/time √ Remarks √ Device ID

information 5-ed 2

Signature √




5-td 1 Date/time √ Remarks √ Device ID

information 5-ed 1

Signature




5-td 1 Date/time √ Remarks Device ID

information 5-ed 0

Signature

(*) The displaying order of the date (YMD/DMY/MDY) depends on the setting of "Date/Time

(Cladj)".

43




5-td 0 Date/time Remarks Device ID

information 5-ed 0

Signature



5-at 0 Measurement elapsed time

5-td 0 Date/time Remarks Device ID

information 5-ed 0

Signature

7-4-3 CSV Format Appropriate when a personal computer is used to collect data. Measurement values are output in comma separated format.

With "5-td" setting, the date and time can be added to the measurement data.

When a comma is selected as the decimal point by "pnt 1", a semicolon ";" is used as a data separator.

With CSV format selected, the viscosity value and the temperature are output using the internal resolution.

The relation between the measuring unit and the internal resolution is as follows:

Viscosity Temperature Model

mPa･s Pa･s cP P °Ｃ °Ｆ SV-10 0.01 0.0001 0.01 0.0001 Internal

resolution SV-100 - 0.01 - 0.1 0.01 0.01

44

Output format example (1) With ID number, date and time added


5-td 1 Date/time √

5-ed 3 Device

ID number √


Viscosity /

Temper-ature

Display Output format example Remarks

LLLLLmPa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+00000.00,mPa s Zeroes are output for below measuring range error.

0.30 mPa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+00000.30,mPa s 10.0 mPa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+00010.00,mPa s 100 mPa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+00100.00,mPa s 1.00 Pa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+01000.00,mPa s For 1000 mPa⋅s or

greater, the displayed unit is Pa⋅s, but the output unit remains mPa⋅s.

mPa･s /

°C

H Pa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+12000.00,mPa s 12000 is output for above measuring range error.

L Pa･s LAB-12,2003/03/19,12:34:56,+051.23,F,+000.0000, Pa s Zeroes are output for below measuring range error.

0.0003 Pa･s LAB-12,2003/03/19,12:34:56,+051.23,F,+000.0003, Pa s

0.0100 Pa･s LAB-12,2003/03/19,12:34:56,+051.23,F,+000.0100, Pa s

0.100 Pa･s LAB-12,2003/03/19,12:34:56,+051.23,F,+000.1000, Pa s

1.00 Pa･s LAB-12,2003/03/19,12:34:56,+051.23,F,+001.0000, Pa s

Pa･s /

°F

H Pa･s LAB-12,2003/03/19,12:34:56,+051.23,F,+012.0000, Pa s 12 is output for above measuring range error.

L cP LAB-12,2003/03/19,12:34:56,+025.67,C,+000.0000, cP Zeroes are output for below measuring range error.

0.30 cP LAB-12,2003/03/19,12:34:56,+025.67,C,+00000.30, cP 10.0 cP LAB-12,2003/03/19,12:34:56,+025.67,C,+00010.00, cP 100 cP LAB-12,2003/03/19,12:34:56,+025.67,C,+00100.00, cP 10.0 P LAB-12,2003/03/19,12:34:56,+025.67,C,+01000.00, cP For 1000 cP or greater,

the displayed unit is P, but the output unit remains cP.

cP /

°C

H P LAB-12,2003/03/19,12:34:56,+025.67,C,+12000.00, cP 12000 is output for above measuring range error.

L P LAB-12,2003/03/19,12:34:56,+051.23,F,+000.0000, P Zeroes are output for below measuring range error.

0.0030 P LAB-12,2003/03/19,12:34:56,+051.23,F,+000.0030, P 0.100 P LAB-12,2003/03/19,12:34:56,+051.23,F,+000.1000, P 1.00 P LAB-12,2003/03/19,12:34:56,+051.23,F,+001.0000, P 10.0 P LAB-12,2003/03/19,12:34:56,+051.23,F,+010.0000, P

P /

°F

H P LAB-12,2003/03/19,12:34:56,+051.23,F,+120.0000, P 120 is output for above measuring range error.

: Space (ASC 20h)

Outputs in the order of ID number, date, time,temperature, temperature unit, viscosity and viscosityunit. The output data are 52 characters long excluding theterminator.

45


Viscosity /

Temper-ature


L Pa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+00000.00, Pa s Zeroes are output for below measuring range error.

1.00 Pa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+00001.00, Pa s

10.0 Pa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+00010.00, Pa s

Pa･s /

°C H Pa･s LAB-12,2003/03/19,12:34:56,+025.67,C,+00120.00, Pa s 120 is output for

above measuring range error.

L P LAB-12,2003/03/19,12:34:56,+051.23,F,+000000.0, P Zeroes are output for below measuring range error.

10.0 P LAB-12,2003/03/19,12:34:56,+051.23,F,+000010.0, P 100 P LAB-12,2003/03/19,12:34:56,+051.23,F,+000100.0, P

P /

°F H P LAB-12,2003/03/19,12:34:56,+051.23,F,+001200.0, P 1200 is output for

above measuring range error.

: Space (ASC 20h)

46

Output format example (2) With date and time added


5-td 1 Date/time √

5-ed 0 Device

ID number


Viscosity / Temperature Display Output format example

mPa⋅s / °C 1.23 mPa⋅s ,2003/03/19,12:34:56,+025.67,C,+00001.23,mPa s

: Space (ASC 20h)



Pa⋅s / °C 1.23 Pa⋅s ,2003/03/19,12:34:56,+025.67,C,+00001.23, Pa s

: Space (ASC 20h)

Output format example (3) To output the measured temperature and viscosity only


5-td 0 Date/time

5-ed 0 Device

ID number



mPa⋅s / °C 1.23 mPa⋅s ,,,+025.67,C,+00001.23,mPa s

: Space (ASC 20h)



Pa⋅s / °C 1.23 Pa⋅s ,,,+025.67,C,+00001.23, Pa s

: Space (ASC 20h)

Outputs in the order of date, time, temperature,temperature unit, viscosity and viscosity unit. The output data are 46 characters long excluding theterminator.

Outputs in the order of temperature, temperature unit,viscosity and viscosity unit. The output data are 28 characters long excluding theterminator.

47

7-4-4 RsVisco Format Used with the graphing program RsVisco. Measurement data are output in comma separated format. When a comma is selected as the decimal point by "pnt 1", a semicolon ";" is used as a data separator.

When a measurement is started using RsVisco, the viscometer automatically selects this format.

Measurement data are output in the order of viscosity, viscosity unit, temperature and temperature unit.

The output data are 25 characters long excluding the terminator

With RsVisco format selected, the viscosity value and the temperature are output using the internal resolution.

The relation between the measuring unit and the internal resolution is as follows:

Viscosity Temperature Model

mPa･s Pa･s cP P °Ｃ °Ｆ SV-10 0.01 0.0001 0.01 0.0001 Internal

resolution SV-100 - 0.01 - 0.1 0.01 0.01


Viscosity /

Temper-ature


LLLLL mPa･s +00000.00,mPa s,+025.67,C Zeroes are output for below measuring range error.

0.30 mPa･s +00000.30,mPa s,+025.67,C

10.0 mPa･s +00010.00,mPa s,+025.67,C

100 mPa･s +00100.00,mPa s,+025.67,C

1.00 Pa･s +01000.00,mPa s,+025.67,C For 1000 mPa⋅s or greater, the displayed unit is Pa⋅s, but the output unit remains mPa⋅s.

mPa･s /

°C

H Pa･s +12000.00,mPa s,+025.67,C 12000 is output for above measuring range error.

L Pa･s +000.0000, Pa s,+051.23,F Zeroes are output for below measuring range error.

0.0003 Pa･s +000.0003, Pa s,+051.23,F

0.0100 Pa･s +000.0100, Pa s,+051.23,F

0.100 Pa･s +000.1000, Pa s,+051.23,F

1.00 Pa･s +001.0000, Pa s,+051.23,F

Pa･s /

°F

H Pa･s +012.0000, Pa ,+051.23,F 12 is output for above measuring range error.

L cP +000.0000, cP ,+025.67,C Zeroes are output for below measuring range error.

0.30 cP +00000.30, cP ,+025.67,C

10.0 cP +00010.00, cP ,+025.67,C

100 cP +00100.00, cP ,+025.67,C

10.0 P +01000.00, cP ,+025.67,C For 1000 cP or greater, the displayed unit is P, but the output unit remains cP.

cP /

°C

H P +12000.00, cP ,+025.67,C 12000 is output for above measuring range error.

L P +000.0000, P ,+051.23,F Zeroes are output for below measuring range error.

0.0030 P +000.0030, P ,+051.23,F

0.100 P +000.1000, P ,+051.23,F

1.00 P +001.0000, P ,+051.23,F

10.0 P +010.0000, P ,+051.23,F

P /

°F

H P +120.0000, P ,+051.23,F 120 is output for above measuring range error.

: Space (ASC 20h)

48

SV-100 output format example Viscosity

/ Temper-

ature


L Pa･s +0000.000, Pa s,+025.67,C Zeroes are output for below measuring range error.

1.00 Pa･s +00001.00, Pa s,+025.67,C

10.0 Pa･s +00010.00, Pa s,+025.67,C

Pa･s /

°C H Pa･s +00120.00, Pa ,+025.67,C 120 is output for above measuring range

error. L P +000000.0, P ,+051.23,F Zeroes are output for below measuring

range error. 10.0 P +000010.0, P ,+051.23,F

100 P +000100.0, P ,+051.23,F

P /

°F

H P +001200.0, P ,+051.23,F 1200 is output for above measuring range error.

: Space (ASC 20h)

49

8. CONNECTION TO A PERSONAL COMPUTER Using the standard RS-232C serial interface and the RS-232C cable provided, the viscometer can

be connected to a personal computer.

In addition, using the graphing program RsVisco, contained in the accessory Windows

communication tools WinCT-Viscosity, measurement data are imported to a Windows-based

personal computer to display a graph in real time.

For details, refer to "\English\ReadMe.txt" on the CR-ROM.

50

9. CONNECTION TO A PRINTER The viscometer can be connected to the optional compact printer, AD-8121B using the

standard RS-232C interface and the measurement results can be printed.

The statistical calculation data of the results and the changes in the viscosity value per a certain time can be printed using the function of the AD-8121B.

Use the AD-8121B accessory cable to connect the printer to the viscometer. Setting List

Viscometer function settings What to print

prt type 5-at 5-td 5-ed pU5e

AD-8121B settings

Measurement results 0､1 1 0､1 0､1 0､1､2 1 MODE 3

Statistical calculation 0､1 0 ⎯ ⎯ ⎯ ⎯ MODE 1

Changes in the viscosity value per a certain time 2 0 ⎯ ⎯ ⎯ 0

MODE 2 (Interval printing

is used.) ⎯:: Not applicable.

Compact printer, AD-8121B

51

10. SERIAL INTERFACE RS-232C Serial Interface

Transmission system EIA RS-232C Transmission form Asynchronous, bi-directional, half duplex Data format Baud rate 2400 bps Data bits 7 bits Parity EVEN Stop bit 1 bit Code ASCII Terminator CR LF (CR: 0Dh, LF: 0Ah) Bit format

Pin Connections

SV-10/SV-100 (DCE) Computer (DTE) Pin No. Signal Name *1 Description Direction Signal Name

1 FG Frame ground - FG 2 RXD Receive data ← TXD 3 TXD Transmit data → RXD 4 RTS Ready to send *2 ← RTS 5 CTS Clear to send *2 → CTS 6 DSR Data set ready → DSR 7 SG Signal ground - SG

16, 18, 19, 21, 23 Internal use Do not connect *3 Others Not used

*1: Signal names of the viscometer side are the same as the DTE side with TXD and RXD reversed.

*2: RTS and CTS flow control are not used. CTS output is HI always. *3: Normal DOS/V cables do not use these terminals.

RS-232C -5 V to -15 V +5 V to +15 V

Data bits

Start bit Parity bit

Stop bit

52

11. COMMAND LIST The viscometer can be controlled by the following commands from the computer. Add a terminator ( 0Dh、0Ah ) to each command.

Command Description Q Outputs the current data. SIR Outputs data continuously C Stops data output by SIR command. QM Outputs the data during measurement. (Effective only during measurement.) START Same as the START key STOP Same as the STOP key HOLD Same as the HOLD key MODE Same as the MODE key PRINT Same as the PRINT key

53

12. TROUBLESHOOTING The viscometer is a precision instrument. When the measuring environment or the measurement method is inadequate, correct values can not be obtained. If measurement values do not become stable or they seem to be incorrect, check as described below. If improper performance persists after checking, contact the local A&D dealer for repair.

When measurement values do not become stable:

Is the ambient environment free from vibration and drafts?

Places such as second or higher floor or near busy highways or rail lines are prone to vibration. Avoid these places or use an anti-vibration table, AD-1685.

Reconsider the setting of "Condition (Cond) ” of the function setting. Set it to "Cond 2".

Avoid direct drafts in the vicinity of the viscometer.

Is there a strong electrical or magnetic noise source such as a motor near the viscometer?

Install the viscometer away from the electrical or magnetic noise sources.

Is the protector or the sensor protective cover in contact with the sensor plates or the temperature sensor?

Attach the protector and the sensor protective cover properly so that they do not touch the sensor plates or the temperature sensor.

Remove the protector, the surface locator plate or the sensor protective cover when necessary.

How to remove the protector

Press the left and right side frames lightly in the direction indicated as 1 to remove the

rotational axis. Pull the protector in the direction indicated as 2 to remove.

54

How to remove and attach the surface locator plate

Removing Loosen the screw and remove the surface

locator plate from the temperature sensor.

Attaching Install the surface locator plate as

shown in the illustration. Slip the locator

plate onto the temperature sensor.

Move the plate to the top of the sensor.

Adjust the position of the locator

plate so that the tip of the locator

plate aligns to the center of the

narrow part of the sensor plates.

Tighten the screw.

Note When the sensor plate and the surface locator plate are too close, a measurement error may occur due to the liquid surface tension. Therefore, secure a clearance of at least 1 mm between the sensor plate and the surface locator plate. Maintain the clearance by rotating the surface locator plate when necessary.

How to remove the sensor protective cover

(Sensor unit side view)

Remove the protector and the surface locator plate.

Pull the sensor protective cover in the direction indicated as 1 to release the portions A (two) and B from the protector frame.

Pull the sensor protective cover in the direction indicated as 2 to remove.

Note When removing the sensor protective cover, it may touch the sensor plates and the temperature sensor. Use much care not to damage them.

55

When measurement values are not correct:

Has the sample surface been adjusted to the center of the narrow part of the sensor plates?

Adjust the table height by turning the knob so that the center of the narrow part of the

sensor plates is on the sample surface.

Are the positions of the left and right sensor plates in the sample surface the same?

If not the same, level the viscometer using the leveling feet so that the liquid surface will

be leveled.

Are the sensor plates clean?

Remove any residual sample material from the sensor plates using alcohol.

When any residual sample material is on the portion of the sensor plates above the

sample surface, changes in the mass cause the vibration frequency to shift, which will

result in a measurement error.

Are the sensor plates bent?

If bent, contact the local A&D dealer for repair.

Does the sample generate bubbles because of the differences in the sample temperature and the ambient temperature and do the bubbles accumulate on the sensor plates?

The sample viscosity depends on the temperature.

Generally, the viscosity of a liquid is temperature dependent and changes by negative 2

to negative 10 percent, per degree Celsius.

Is the sample surface lowered?

In a measurement that takes a long time, evaporation may cause the sample surface to

be lowered. Maintain the sample surface level.

Do the main unit and the display unit have the same serial number?

The main unit and the display unit have been adjusted in pairs. Confirm that the main

unit and the display unit have the same serial number.

Is the viscometer in the data hold mode?

To release the data hold mode,

press the HOLD key.

The processing indicator blinks

while a measurement is performed.

Is calibration performed?

When the absolute viscosity value is important, it is recommend that a periodic

calibration be performed using a standard viscosity fluid.

56

When more precise measurement is required:

When the viscometer is installed for the first time or is moved to another location, plug in the AC adapter and warm up the viscometer for one hour or more, to acclimatize the viscometer to the measuring environment. And before measurement, calibrate the viscometer using the sample cup that will be used for measurement.

Placing the sensor plates and the temperature sensor in the sample may change the sample temperature. For precise measurement, leave the sample as is for a while, after placing the sensor plates and the temperature sensor, to ensure no changes to the sample temperature. And then, start a measurement.

When the sensor plates and the temperature sensor are cleaned using alcohol, the plates and the sensor are cooled temporarily and their temperature is lowered. Allow the plates and the sensor to acclimatize to the measuring environment before measurement.

When the temperature values are not correct:

Is the display unit connected to the main unit properly using the connection cable?

Refer to "2-2 Installing the Viscometer" on page 7 to make a connection between the

display unit and the main unit.

When water viscosity is to be measured:

When tap water is poured into the sample cup directly and is measured, bubbles are generated on the sensor plates due to the difference in pressure and temperature and the viscosity may increase gradually. Pressurized tap water generates bubbles easily. Therefore, use distilled or purified water that is not pressurized.

In a measurement that takes a long time, the sample viscosity may increase due to water contamination. Perform a periodic check on water quality.

57

13. ERROR DISPLAY Error display Description

Above measuring range error The viscosity value exceeds the upper limit of the viscosity measuring range (SV-10: 11.99 Pa⋅s, SV-100: 119.9 Pa⋅s). The viscosity of the sample can not be measured. This error may occur when the display unit is not connected to the main unit.

Below measuring range error The viscosity value is below the lower limit of the viscosity measuring range (SV-10: 0.30 mPa⋅s, SV-100: 0.90 Pa⋅s) The viscosity of the sample can not be measured. This error may occur when the display unit is not connected to the main unit.

The power supply for the internal clock is depleted. Press any key to enter the clock correction mode. Setting the clock enables the viscometer to be used temporarily. If the error occurs frequently, contact the local A&D dealer for repair.

Internal IC error Turn the power off. Then, turn the power on again. If this does not release the error, contact the local A&D dealer for repair.

58

14. SPECIFICATIONS Measurement method SV-10 SV-100

Measurement method Sine-wave Vibro Viscometer using the Tuning-fork Vibration method

Vibration frequency 30 Hz

Viscosity measuring range 0.3 to 10000 mPa⋅s 1 to 100 Pa⋅s

(1000 to 100000 mPa⋅s)

Repeatability*2 1% (Standard deviation)

Measurement accuracy *1 Accuracy *3

±3% (1 to 1000 mPa⋅s) ±5% (1 to 10 Pa⋅s) (1000 to 10000 mPa⋅s)

Range (mPa⋅s)

Minimum display (mPa⋅s)

Minimum display (Pa⋅s)

Range (Pa⋅s)

Minimum display (Pa⋅s)

0.3-10 0.01 0.0001 1-10 0.01

10-100 0.1 0.0001 10-100 0.1

100-1000 1 0.001

Minimum display

1000-10000 10 *4 0.01

Unit (Viscosity) mPa⋅s, Pa⋅s, cP, P Pa⋅s, P

Operating temperature 10 to 40°C (50 to 104°F)

Minimum sample amount 35 mL

Temperature display 0 to 160°C/0.1°C, (32 to 320°F/0.1°F) *5

0 to 20°C/32 to 68°F: ±1°C/±1.8°F

20 to 30°C/68 to 86°F: ±0.5°C/±0.9°F

30 to 100°C/86 to 212°F: ±2°C/±3.6°F Temperature measurement accuracy

100 to 160°C/212 to 320°F: ±4°C/±7.2°F

Display Vacuum fluorescent display (VFD)

Connection cable length 1.5 m (between the main unit and the display unit)

Communication RS-232C standard

Power supply AC adapter (Confirm that the adapter type is correct for the local voltage and power receptacle type.)

Power consumption Approx. 14 VA (Including the AC adapter)

Main unit: 332 (W) x 314 (D) x 536 (H) mm/Approx. 5.0 kg External dimensions/mass Display unit: 238(W) x 132 (D) x 170 (H) mm/Approx. 1.3 kg

AC adapter (1 pc)

Windows communication tools for viscosity (WinCT-Viscosity) CD (1 pc.)

Sample cups (4 pcs)

RS-232C cable (25P-9P, 1 pc)

Standard accessories

Connection cable (1.5 m, 1pc)

*1 to *5: See the next page for the detailed description.

59

*1 When a sample cup of 45 mL is used.

*2 Repetitive measurement with the sensor plates remaining in the sample

*3 The value after calibration using a standard viscosity fluid at a temperature range between 20°C and 30°C with no condensation.

In a measurement that takes a long time, perform calibration using a standard viscosity fluid or purified water periodically, as necessary.

*4 The unit switches to Pa⋅s.

*5 The operating temperature of each standard and optional accessory is as follows: Sample cup (Standard and optional) AX-SV-33: 0 to 120°C Small sample cup (Optional) AX-SV-34: 0 to 120°C Glass sample cup (Optional) AX-SV-35: 0 to 230°C Water jacket assembly (Optional) AX-SV-37: 0 to 100°C Glass storage container (Optional) AX-SV-38: 0 to 180°C (Lid: 80°C max.)

Take the operating temperature shown above into considerations when using the above items.

60

15. OPTIONAL ACCESSORIES List of Optional Accessories (sold separately)

Name Number Standard viscosity fluid (JS2.5) *1 AX-SV-31-2.5 Standard viscosity fluid (JS5) *1 AX-SV-31-5 Standard viscosity fluid (JS10) *1 AX-SV-31-10 Standard viscosity fluid (JS20) *1 AX-SV-31-20 Standard viscosity fluid (JS50) *1 AX-SV-31-50 Standard viscosity fluid (JS100) *1 AX-SV-31-100 Standard viscosity fluid (JS200) *1 AX-SV-31-200 Standard viscosity fluid (JS500) *1 AX-SV-31-500 Standard viscosity fluid (JS1000) *1 AX-SV-31-1000 Standard viscosity fluid (JS2000) *2 AX-SV-31-2000 Standard viscosity fluid (JS14000) AX-SV-31-14000 Standard viscosity fluid (JS160000) *3

Capacity: 500 mL, with certification according to JIS Z8809

AX-SV-31-160000 Sample cup (Capacity: 35 to 45 mL) 10 pieces/set Same as the standard accessory.

AX-SV-33

Small sample cup (Capacity: 10 mL) 10 pieces/set AX-SV-34 Glass sample cup (Capacity: Approx. 13 mL) AX-SV-35 Positioning stopper AX-SV-36 Water jacket assembly AX-SV-37 Glass storage container (Capacity: Approx. 50 mL) 10 pieces/set AX-SV-38 Analog output AX-SV-42 Extension cable (5 m) To extend the distance between the main unit and the display unit.

AX-SV-43

Compact printer AD-8121B *1 Only available for the SV-10 *2 When calibrated with the SV-100, use it at 25°C or below. *3 Only available for the SV-100

AX-SV-33 Sample Cup

• The AX-SV-33 consists of :

Sample cup (Capacity: 35 to 45 mL) 10 pcs (Polycarbonate, Operating temperature: 120°C max.)

AX-SV-34 Small Sample Cup (10mL)

• Used when a small amount of sample will be measured.


Small sample cup (10 mL) 10 pcs Small sample cup cover 10 pcs Sample cup 1 pc

(All: Polycarbonate, Operating temperature: 120°C max.)

61

AX-SV-35 Glass Sample Cup (Approx. 13 mL) • Used when organic solvents will be measured.


Glass sample cup (Capacity: Approx.13mL) 1 pc (Pyrex® glass, Operating temperature: 230°C max.)

Glass sample cup holder (Stainless steel) 1 pc

Sample cup 1 pc (Polycarbonate, Operating temperature: 120°C max.)

AX-SV-36 Positioning Stopper

• Used to fix the position of the sensor unit and the sensor plates so that positioning the sensor plates and the sample surface is not required each time a measurement is performed in a repetitive test. See below for how to attach the positioning stopper.

How to attach the positioning stopper:

1 Raise the lever so that the sensor unit can be moved.

2 While pinching the grips, lift out the sensor unit from above.

3 While pinching the grips on the positioning stopper, attach the stopper, with the lever on the left side as seen from front, on the supportintg post. Be sure to place the guide located on the inner wall of the stopper in the guide channels located on the supporting post.

4 Position the stopper at an appropriate height. Raise the lever to secure the stopper.

5 While pinching the grips, attach the sensor unit on the supporting post.

6 Lower the sensor unit until it comes into contact with the stopper.

7 Lower the lever to secure the sensor unit.

Supporting post

1

2

7

Lever

Sensor unit

Grips

Positioning stopper

Make these surfacescome into contact

Sensor plates

6

4

Guide channel

Grips

Sensor unit

62

AX-SV-37 Water Jacket Assembly • Used, in combination with a commercially available

constant temperature bath for heating medium circulation, to maintain the sample temperature constant or to measure the viscosity while changing the sample temperature.

• The glass sample cup sold separately can also be used.


Water jacket 1 pc (Main body: Polycarbonate, Packing: Silicone rubber, Washer: Nylon)

Small sample cup 4 pcs (Polycarbonate, Operating temperature: 120°C max.)

Small sample cup cover 4 pcs (Polycarbonate, Operating temperature: 120°C max.)

Screw 1 pc (Screw: Polyacetal, Washer: Nylon)

• Specifications Circulation nozzle: Outside diameter 10.5 mm Recommended hose: Silicone tube, inside diameter 8 mm

• It is recommended that, for safety, a commercially available tubing clamp (clamping size: 11 to 20 mm) be used to fasten the tube securely to the nozzle.

• When using the water jacket, make sure that no inner pressure is exerted in the water jacket due to the kinked or blocked tubes, as that could exert the pressure in the water jacket, causing it to break.

• When a stirrer is attached at the bottom of the water jacket, the sample viscosity can be measured while the sample is being stirred. The maximum viscosity value which can be measured is 1000 mPa⋅s. (Only for SV-10)

Stirrer: VARIOMAG MICRO manufactured by H+P Labortechnik AG

Use a rotator with a size of 6 mm (length) x 4 mm (diameter).

63

AX-SV-38 Glass Storage Container

• Used to store sample fluids.

• The viscosity of the sample stored in the container can be measured as it is.


Glass storage container 10 pcs Capacity: Approx. 50mL Material: Polypropylene Operating temperature: 180°C max.

Lid 10 pcs Material: Polyethylene Operating temperature: 80°C max.

AX-SV-39 Plastic Storage Container • Used to store sample fluids.

• The viscosity of the sample stored in the container can be measured as it is.


Plastic storage container 20 pcs Capacity: 120mL max. Material: Polypropylene Operating temperature: 120°C max.

Lid 20 pcs Material: Polypropylene Operating temperature: 120°C max.

Inner lid 20 pcs Material: Low density polyethylene Operating temperature: 80°C max.

AD-1685 Anti-vibration table • Used when the viscosity value is unstable due to

external vibration, especially for measuring low viscosity.

Glass storage container

Lid

47mm(100mL)

Plastic storage container

Lid

Inner lid

64

16. EXTERNAL DIMENSIONS Whole View

Unit: mm

Detailed View of the Sensor Unit

Unit: mm

Documents

SV-10 SV-100 - A&D Company · 2018-09-06 · 11 3-3-2 SV-100 Use the MODE key to switch between Pa⋅s (Pascal second) and P (Poise). The unit selected at the factory before shipment